B520 Windows 8 Multitouch

I bought a Lenovo B520 All In One in the hope of installing Windows 8. I managed to install Win 8 on both Hyper V and VirtualBox and realized the multitouch doesnt seem to work. Do I need to install any special drivers for multitouch? The only thing that works right now is the mouse pointing which simulates the left click.

Multitouch does work on the base OS (Win 7) the machine came with. Any ideas?